@import"https://fonts.googleapis.com/css2?family=Shippori+Mincho:wght@400;700;900&family=Noto+Serif+JP:wght@400;700;900&display=swap";:root{--cell-size: 48px;--board-edge: #3f2a14;--cell-bg-start: #f6e2be;--cell-bg-end: #e8c889;--line: rgba(80, 50, 20, .9);--font: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", serif}.board-title{text-align:center}.board-wrapper{display:flex;justify-content:center;padding:8px}.shogi-board-container{display:inline-block;padding:8px;background:linear-gradient(180deg,var(--cell-bg-start),var(--cell-bg-end));border:8px solid var(--board-edge);border-radius:6px;box-shadow:0 6px 18px #100a052e}.shogi-board{border-collapse:collapse;table-layout:fixed;background:transparent}.shogi-board td.cell{width:var(--cell-size);height:var(--cell-size);padding:0;margin:0;text-align:center;vertical-align:middle;border:1px solid var(--line);font-family:var(--font);font-weight:900;font-size:18px;color:#0f0906;-webkit-user-select:none;user-select:none;box-sizing:border-box;background:linear-gradient(180deg,#ffffff05,#00000005);overflow:hidden;cursor:pointer;transition:background-color .2s ease}.shogi-board td.cell:hover{background-color:#6496ff26}.shogi-board td.cell.selected{background-color:#64c8644d;border:2px solid #4ade80}.shogi-piece{width:calc(var(--cell-size) * .9);height:calc(var(--cell-size) * .9);max-width:100%;max-height:100%;object-fit:contain;display:block;margin:0 auto;pointer-events:none;transform-origin:50% 50%;transform:scaleX(1.12);will-change:transform}.shogi-board tr:first-child td.cell{border-top-width:2px}.shogi-board tr:last-child td.cell{border-bottom-width:2px}.shogi-board tr td:first-child{border-left-width:2px}.shogi-board tr td:last-child{border-right-width:2px}@media (max-width: 640px){:root{--cell-size: 36px}.shogi-board td.cell{font-size:14px}.shogi-piece{transform:scaleX(1.06)}}.stand-pieces-list{list-style:none;padding:0;display:flex;flex-wrap:wrap;gap:8px;justify-content:center}.stand-piece-item{display:flex;flex-direction:column;align-items:center;padding:8px;background-color:#fff;border:2px solid #ddd;border-radius:8px;cursor:pointer;transition:all .2s;min-width:60px}.stand-piece-image{width:40px;height:40px;object-fit:contain}.stand-piece-count{margin-top:4px;font-size:14px;font-weight:700;color:#333}.stand-piece-item.selected{background-color:#4ade80;border:2px solid #22c55e}.stand-piece-item:hover{background-color:#e8f4fd}.stand-piece-item.selected:hover{background-color:#4ade80}.stand-piece-item.disabled{cursor:default}.stand-piece-item.disabled:hover{background-color:#fff}.app-container{text-align:center}.error-message{color:red;text-align:center;padding:8px}.selected-piece-message{color:#00f;text-align:center;padding:8px}.promote-dialog-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background-color:#00000080;display:flex;justify-content:center;align-items:center;z-index:1000}.promote-dialog-content{background-color:#fff;padding:32px;border-radius:8px;box-shadow:0 4px 16px #0003}.promote-dialog-title{margin-top:0;margin-bottom:24px}.promote-dialog-buttons{display:flex;gap:16px}.promote-button{padding:12px 32px;font-size:16px;cursor:pointer;background-color:#4caf50;color:#fff;border:none;border-radius:4px}.promote-button:hover{background-color:#45a049}.no-promote-button{padding:12px 32px;font-size:16px;cursor:pointer;background-color:#f44336;color:#fff;border:none;border-radius:4px}.no-promote-button:hover{background-color:#da190b}.game-over-message{font-size:18px;margin-bottom:24px}.replay-button{width:100%}:root{--kanji-font: "Shippori Mincho", "Noto Serif JP", "Hiragino Mincho ProN", serif}body{margin:0;padding:0;background:#f9fafb;color:#111827;font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial}.app-container{display:flex;flex-direction:column;align-items:center;gap:16px;padding:18px}h1{text-align:center;margin:0;font-family:var(--kanji-font)}.centered-section{text-align:center}.kanji-font{font-family:var(--kanji-font)}